gorter



H. H. GORTER.

(No Model.)

ROTARY NOZZLE.

awe/Moi Patented Mar. 8, 1898.

WM; mm 75M WM ATENT Fries.

HENRY II. GCRTER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO MARY E.GORTER,

OF SAME PLACE.

ROTARY NOZZLE.

SPECIFICATION forming part of Letters Patent N 0. 600,198, dated March8, 1898.

Application filed March 26, 1897.

To aZZ whom it may concern:

Be it known that I, HENRY I-I. GORTER, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements in RotaryNozzles, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relates to that class of nozzles called rotary nozzles,rotarysprinklers, or circulators, such as are used for horticultural,street-sprinkling, and, more especially, fire-extinguishing purposes, inwhich a nozzle or combination of nozzles rotates around a fixed hollowcore or body screwed onto a pipe or length of hose, through which thewater gains access to the nozzles proper, which it drives around as itis ejected therefrom.

The object of my invention is to provide means for reducing the frictionbetween the fixed and rotating parts of the nozzle to a minimum, therebygreatly increasing its efficiency in that it requires less pressure torotate it, thus enabling me to have a greater area of outlets for anygiven size of supply-pipe than has been possible heretofore, pressurestandin gin an inverse ratio to the area of discharge. I attain thisobject by the mechanism illustrated in the accompanying drawings, inwhich- Figure 1 is a vertical section View of the entire nozzle. Fig. 2is a top view of the nozzle along the dotted line A e z B, showin gballbearing journal.

Similar letters refer to similar parts throughout both views.

a represents the body or core of the nozzle, which may be screwed on anysupply-pipe or length of hose. It is tapered off at its upper portionand has holes 0 0 cut through its sides, forming waterways and leavingribs 6 b b which carry on top a boss 0, into which is screwed orotherwise fastened an axle D,which has a mushroom-shaped expanded partcl and which forms the fulcrum around which the balls .r w rotate. Thisaxle or fulcrum D may be made of any hard metal; but I prefer to make itof steel, hardened. Around this axle Serial No. 629,244. (No model.)

D, and also around a portion of core-piece a, rotates the outer shell 6,preferably made of phosphor-bronze. It has cast on its upper end acup-shaped projection e, which is bored out inside and has a holethrough its center, which allows the contracted part of the axle D topass through it. Around the bottom of this cup-shaped projection e asuitable number of balls as are placed, whose upper sides lie in aquarter-circular groove y, out in the lower edge of expanded part cl ofthe axle D. On the outside of this cup-shaped projection e a fine threadis out, on which is snugly screwed the cap 71.. Between this cap h andinto a quarter-circular groove y, out along the upper edge of theexpanded part (1 of the axle D, lie a like suitable number of balls as,the whole forming a top and bottom ball-bearing journal, as clearlyillustrated in the drawings.

The nozzles 72 n, which project horizontally from the shell 6, are setat an angle with regard to the center line as, and I prefer to set themat an angle of about thirty degrees, as producing the best results. Thenozzles 12 p 19 p are inclined at various angles from the vertical andassist in distributing the water evenly.

I am aware that ball-bearings may in various ways be used in connectionwith a similar apparatus-for instance, a ball-bearing may be placedbetween the upper and lower faces of a rotating shell-and I do not wish,therefore, to confine myself particularly to the foregoing describedconstruction.

WVhat I claim as new, and wish to secure by Letters Patent, is

1. In a rotary nozzle, the combination of a hollow core a, through whichthe water enters, a ball-bearing journal, on said hollow core, and anouter spherical shell 6, rotating around said hollow core a, and havingtwo, or more, discharge-tips mounted on its periphery sub stantially as,and for the purpose set forth.

2. In a rotary nozzle, the combination of a hollow core a, aball-bearing journal on said hollow core, and an outer shell e, rotatingaround said hollow core, and having dischargetips 10,19, &c., mounted onits periphery, said tips being set at various angles, with regard to thevertical axis of said outer shell 6, substantially as, and for thepurpose set forth.

3. In a rotary nozzle, the combination of a hollow core a, aball-bearing journal placed on said core, and an outer shell e rotatingaround said core a, and having discharge-tips n, n, mounted on itsperiphery, said tips n, n,

being placed in such a manner, that a line drawn through theirlongitudinal axis, will bisect, the periphery of said shell e, in two 10unequal parts, or run tangent thereto; substantially as, and for thepurpose set forth,

HENRY H. GORTER.

Witnesses:

M. E. GORTER, J OHN MAXWELL.

